vendor files

vendor/k8s.io/kubernetes/pkg/volume/local/BUILD

@@ -0,0 +1,59 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "local.go",
+    ],
+    importpath = "k8s.io/kubernetes/pkg/volume/local",
+    deps = [
+        "//pkg/kubelet/events:go_default_library",
+        "//pkg/util/keymutex:go_default_library",
+        "//pkg/util/mount:go_default_library",
+        "//pkg/util/strings:go_default_library",
+        "//pkg/volume:go_default_library",
+        "//pkg/volume/util:go_default_library",
+        "//pkg/volume/validation:go_default_library",
+        "//vendor/github.com/golang/glog:go_default_library",
+        "//vendor/k8s.io/api/core/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/types:go_default_library",
+        "//vendor/k8s.io/client-go/kubernetes/scheme:go_default_library",
+        "//vendor/k8s.io/client-go/tools/record:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["local_test.go"],
+    importpath = "k8s.io/kubernetes/pkg/volume/local",
+    library = ":go_default_library",
+    deps = [
+        "//pkg/volume:go_default_library",
+        "//pkg/volume/testing:go_default_library",
+        "//vendor/k8s.io/api/core/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/types:go_default_library",
+        "//vendor/k8s.io/client-go/util/testing:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)

vendor/k8s.io/kubernetes/pkg/volume/local/OWNERS

@@ -0,0 +1,14 @@
+approvers:
+- saad-ali
+- thockin
+- vishh
+- msau42
+- jingxu97
+- jsafrane
+reviewers:
+- saad-ali
+- jsafrane
+- rootfs
+- jingxu97
+- msau42
+- vishh

vendor/k8s.io/kubernetes/pkg/volume/local/doc.go

@@ -0,0 +1,18 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package local contains the internal representation of local volumes
+package local // import "k8s.io/kubernetes/pkg/volume/local"

vendor/k8s.io/kubernetes/pkg/volume/local/local.go

@@ -0,0 +1,309 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package local
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/golang/glog"
+
+	"k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/kubernetes/scheme"
+	"k8s.io/client-go/tools/record"
+	"k8s.io/kubernetes/pkg/kubelet/events"
+	"k8s.io/kubernetes/pkg/util/keymutex"
+	"k8s.io/kubernetes/pkg/util/mount"
+	"k8s.io/kubernetes/pkg/util/strings"
+	"k8s.io/kubernetes/pkg/volume"
+	"k8s.io/kubernetes/pkg/volume/util"
+	"k8s.io/kubernetes/pkg/volume/validation"
+)
+
+// This is the primary entrypoint for volume plugins.
+func ProbeVolumePlugins() []volume.VolumePlugin {
+	return []volume.VolumePlugin{&localVolumePlugin{}}
+}
+
+type localVolumePlugin struct {
+	host        volume.VolumeHost
+	volumeLocks keymutex.KeyMutex
+	recorder    record.EventRecorder
+}
+
+var _ volume.VolumePlugin = &localVolumePlugin{}
+var _ volume.PersistentVolumePlugin = &localVolumePlugin{}
+
+const (
+	localVolumePluginName = "kubernetes.io/local-volume"
+)
+
+func (plugin *localVolumePlugin) Init(host volume.VolumeHost) error {
+	plugin.host = host
+	plugin.volumeLocks = keymutex.NewKeyMutex()
+	eventBroadcaster := record.NewBroadcaster()
+	eventBroadcaster.StartLogging(glog.Infof)
+	recorder := eventBroadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "localvolume"})
+	plugin.recorder = recorder
+	return nil
+}
+
+func (plugin *localVolumePlugin) GetPluginName() string {
+	return localVolumePluginName
+}
+
+func (plugin *localVolumePlugin) GetVolumeName(spec *volume.Spec) (string, error) {
+	// This volume is only supported as a PersistentVolumeSource, so the PV name is unique
+	return spec.Name(), nil
+}
+
+func (plugin *localVolumePlugin) CanSupport(spec *volume.Spec) bool {
+	// This volume is only supported as a PersistentVolumeSource
+	return (spec.PersistentVolume != nil && spec.PersistentVolume.Spec.Local != nil)
+}
+
+func (plugin *localVolumePlugin) RequiresRemount() bool {
+	return false
+}
+
+func (plugin *localVolumePlugin) SupportsMountOption() bool {
+	return false
+}
+
+func (plugin *localVolumePlugin) SupportsBulkVolumeVerification() bool {
+	return false
+}
+
+func (plugin *localVolumePlugin) GetAccessModes() []v1.PersistentVolumeAccessMode {
+	// The current meaning of AccessMode is how many nodes can attach to it, not how many pods can mount it
+	return []v1.PersistentVolumeAccessMode{
+		v1.ReadWriteOnce,
+	}
+}
+
+func getVolumeSource(spec *volume.Spec) (*v1.LocalVolumeSource, bool, error) {
+	if spec.PersistentVolume != nil && spec.PersistentVolume.Spec.Local != nil {
+		return spec.PersistentVolume.Spec.Local, spec.ReadOnly, nil
+	}
+
+	return nil, false, fmt.Errorf("Spec does not reference a Local volume type")
+}
+
+func (plugin *localVolumePlugin) NewMounter(spec *volume.Spec, pod *v1.Pod, _ volume.VolumeOptions) (volume.Mounter, error) {
+	volumeSource, readOnly, err := getVolumeSource(spec)
+	if err != nil {
+		return nil, err
+	}
+
+	return &localVolumeMounter{
+		localVolume: &localVolume{
+			pod:             pod,
+			podUID:          pod.UID,
+			volName:         spec.Name(),
+			mounter:         plugin.host.GetMounter(plugin.GetPluginName()),
+			plugin:          plugin,
+			globalPath:      volumeSource.Path,
+			MetricsProvider: volume.NewMetricsStatFS(volumeSource.Path),
+		},
+		readOnly: readOnly,
+	}, nil
+
+}
+
+func (plugin *localVolumePlugin) NewUnmounter(volName string, podUID types.UID) (volume.Unmounter, error) {
+	return &localVolumeUnmounter{
+		localVolume: &localVolume{
+			podUID:  podUID,
+			volName: volName,
+			mounter: plugin.host.GetMounter(plugin.GetPluginName()),
+			plugin:  plugin,
+		},
+	}, nil
+}
+
+// TODO: check if no path and no topology constraints are ok
+func (plugin *localVolumePlugin) ConstructVolumeSpec(volumeName, mountPath string) (*volume.Spec, error) {
+	localVolume := &v1.PersistentVolume{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: volumeName,
+		},
+		Spec: v1.PersistentVolumeSpec{
+			PersistentVolumeSource: v1.PersistentVolumeSource{
+				Local: &v1.LocalVolumeSource{
+					Path: "",
+				},
+			},
+		},
+	}
+	return volume.NewSpecFromPersistentVolume(localVolume, false), nil
+}
+
+// Local volumes represent a local directory on a node.
+// The directory at the globalPath will be bind-mounted to the pod's directory
+type localVolume struct {
+	volName string
+	pod     *v1.Pod
+	podUID  types.UID
+	// Global path to the volume
+	globalPath string
+	// Mounter interface that provides system calls to mount the global path to the pod local path.
+	mounter mount.Interface
+	plugin  *localVolumePlugin
+	volume.MetricsProvider
+}
+
+func (l *localVolume) GetPath() string {
+	return l.plugin.host.GetPodVolumeDir(l.podUID, strings.EscapeQualifiedNameForDisk(localVolumePluginName), l.volName)
+}
+
+type localVolumeMounter struct {
+	*localVolume
+	readOnly bool
+}
+
+var _ volume.Mounter = &localVolumeMounter{}
+
+func (m *localVolumeMounter) GetAttributes() volume.Attributes {
+	return volume.Attributes{
+		ReadOnly:        m.readOnly,
+		Managed:         !m.readOnly,
+		SupportsSELinux: true,
+	}
+}
+
+// CanMount checks prior to mount operations to verify that the required components (binaries, etc.)
+// to mount the volume are available on the underlying node.
+// If not, it returns an error
+func (m *localVolumeMounter) CanMount() error {
+	return nil
+}
+
+// SetUp bind mounts the directory to the volume path
+func (m *localVolumeMounter) SetUp(fsGroup *int64) error {
+	return m.SetUpAt(m.GetPath(), fsGroup)
+}
+
+// SetUpAt bind mounts the directory to the volume path and sets up volume ownership
+func (m *localVolumeMounter) SetUpAt(dir string, fsGroup *int64) error {
+	m.plugin.volumeLocks.LockKey(m.globalPath)
+	defer m.plugin.volumeLocks.UnlockKey(m.globalPath)
+
+	if m.globalPath == "" {
+		return fmt.Errorf("LocalVolume volume %q path is empty", m.volName)
+	}
+
+	err := validation.ValidatePathNoBacksteps(m.globalPath)
+	if err != nil {
+		return fmt.Errorf("invalid path: %s %v", m.globalPath, err)
+	}
+
+	notMnt, err := m.mounter.IsNotMountPoint(dir)
+	glog.V(4).Infof("LocalVolume mount setup: PodDir(%s) VolDir(%s) Mounted(%t) Error(%v), ReadOnly(%t)", dir, m.globalPath, !notMnt, err, m.readOnly)
+	if err != nil && !os.IsNotExist(err) {
+		glog.Errorf("cannot validate mount point: %s %v", dir, err)
+		return err
+	}
+
+	if !notMnt {
+		return nil
+	}
+	refs, err := mount.GetMountRefsByDev(m.mounter, m.globalPath)
+	if fsGroup != nil {
+		if err != nil {
+			glog.Errorf("cannot collect mounting information: %s %v", m.globalPath, err)
+			return err
+		}
+
+		if len(refs) > 0 {
+			fsGroupNew := int64(*fsGroup)
+			fsGroupSame, fsGroupOld, err := volume.IsSameFSGroup(m.globalPath, fsGroupNew)
+			if err != nil {
+				return fmt.Errorf("failed to check fsGroup for %s (%v)", m.globalPath, err)
+			}
+			if !fsGroupSame {
+				m.plugin.recorder.Eventf(m.pod, v1.EventTypeWarning, events.WarnAlreadyMountedVolume, "The requested fsGroup is %d, but the volume %s has GID %d. The volume may not be shareable.", fsGroupNew, m.volName, fsGroupOld)
+			}
+		}
+
+	}
+
+	if err := os.MkdirAll(dir, 0750); err != nil {
+		glog.Errorf("mkdir failed on disk %s (%v)", dir, err)
+		return err
+	}
+
+	// Perform a bind mount to the full path to allow duplicate mounts of the same volume.
+	options := []string{"bind"}
+	if m.readOnly {
+		options = append(options, "ro")
+	}
+
+	glog.V(4).Infof("attempting to mount %s", dir)
+	err = m.mounter.Mount(m.globalPath, dir, "", options)
+	if err != nil {
+		glog.Errorf("Mount of volume %s failed: %v", dir, err)
+		notMnt, mntErr := m.mounter.IsNotMountPoint(dir)
+		if mntErr != nil {
+			glog.Errorf("IsNotMountPoint check failed: %v", mntErr)
+			return err
+		}
+		if !notMnt {
+			if mntErr = m.mounter.Unmount(dir); mntErr != nil {
+				glog.Errorf("Failed to unmount: %v", mntErr)
+				return err
+			}
+			notMnt, mntErr = m.mounter.IsNotMountPoint(dir)
+			if mntErr != nil {
+				glog.Errorf("IsNotMountPoint check failed: %v", mntErr)
+				return err
+			}
+			if !notMnt {
+				// This is very odd, we don't expect it.  We'll try again next sync loop.
+				glog.Errorf("%s is still mounted, despite call to unmount().  Will try again next sync loop.", dir)
+				return err
+			}
+		}
+		os.Remove(dir)
+		return err
+	}
+	if !m.readOnly {
+		// Volume owner will be written only once on the first volume mount
+		if len(refs) == 0 {
+			return volume.SetVolumeOwnership(m, fsGroup)
+		}
+	}
+	return nil
+}
+
+type localVolumeUnmounter struct {
+	*localVolume
+}
+
+var _ volume.Unmounter = &localVolumeUnmounter{}
+
+// TearDown unmounts the bind mount
+func (u *localVolumeUnmounter) TearDown() error {
+	return u.TearDownAt(u.GetPath())
+}
+
+// TearDownAt unmounts the bind mount
+func (u *localVolumeUnmounter) TearDownAt(dir string) error {
+	glog.V(4).Infof("Unmounting volume %q at path %q\n", u.volName, dir)
+	return util.UnmountMountPoint(dir, u.mounter, true) /* extensiveMountPointCheck = true */
+}

vendor/k8s.io/kubernetes/pkg/volume/local/local_test.go

@@ -0,0 +1,358 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package local
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"syscall"
+	"testing"
+
+	"k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	utiltesting "k8s.io/client-go/util/testing"
+	"k8s.io/kubernetes/pkg/volume"
+	volumetest "k8s.io/kubernetes/pkg/volume/testing"
+)
+
+const (
+	testPVName    = "pvA"
+	testMountPath = "pods/poduid/volumes/kubernetes.io~local-volume/pvA"
+	testNodeName  = "fakeNodeName"
+)
+
+func getPlugin(t *testing.T) (string, volume.VolumePlugin) {
+	tmpDir, err := utiltesting.MkTmpdir("localVolumeTest")
+	if err != nil {
+		t.Fatalf("can't make a temp dir: %v", err)
+	}
+
+	plugMgr := volume.VolumePluginMgr{}
+	plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
+
+	plug, err := plugMgr.FindPluginByName(localVolumePluginName)
+	if err != nil {
+		os.RemoveAll(tmpDir)
+		t.Fatalf("Can't find the plugin by name")
+	}
+	if plug.GetPluginName() != localVolumePluginName {
+		t.Errorf("Wrong name: %s", plug.GetPluginName())
+	}
+	return tmpDir, plug
+}
+
+func getPersistentPlugin(t *testing.T) (string, volume.PersistentVolumePlugin) {
+	tmpDir, err := utiltesting.MkTmpdir("localVolumeTest")
+	if err != nil {
+		t.Fatalf("can't make a temp dir: %v", err)
+	}
+
+	plugMgr := volume.VolumePluginMgr{}
+	plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
+
+	plug, err := plugMgr.FindPersistentPluginByName(localVolumePluginName)
+	if err != nil {
+		os.RemoveAll(tmpDir)
+		t.Fatalf("Can't find the plugin by name")
+	}
+	if plug.GetPluginName() != localVolumePluginName {
+		t.Errorf("Wrong name: %s", plug.GetPluginName())
+	}
+	return tmpDir, plug
+}
+
+func getTestVolume(readOnly bool, path string) *volume.Spec {
+	pv := &v1.PersistentVolume{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: testPVName,
+		},
+		Spec: v1.PersistentVolumeSpec{
+			PersistentVolumeSource: v1.PersistentVolumeSource{
+				Local: &v1.LocalVolumeSource{
+					Path: path,
+				},
+			},
+		},
+	}
+	return volume.NewSpecFromPersistentVolume(pv, readOnly)
+}
+
+func TestCanSupport(t *testing.T) {
+	tmpDir, plug := getPlugin(t)
+	defer os.RemoveAll(tmpDir)
+
+	if !plug.CanSupport(getTestVolume(false, tmpDir)) {
+		t.Errorf("Expected true")
+	}
+}
+
+func TestGetAccessModes(t *testing.T) {
+	tmpDir, plug := getPersistentPlugin(t)
+	defer os.RemoveAll(tmpDir)
+
+	modes := plug.GetAccessModes()
+	if !volumetest.ContainsAccessMode(modes, v1.ReadWriteOnce) {
+		t.Errorf("Expected AccessModeType %q", v1.ReadWriteOnce)
+	}
+
+	if volumetest.ContainsAccessMode(modes, v1.ReadWriteMany) {
+		t.Errorf("Found AccessModeType %q, expected not", v1.ReadWriteMany)
+	}
+	if volumetest.ContainsAccessMode(modes, v1.ReadOnlyMany) {
+		t.Errorf("Found AccessModeType %q, expected not", v1.ReadOnlyMany)
+	}
+}
+
+func TestGetVolumeName(t *testing.T) {
+	tmpDir, plug := getPersistentPlugin(t)
+	defer os.RemoveAll(tmpDir)
+
+	volName, err := plug.GetVolumeName(getTestVolume(false, tmpDir))
+	if err != nil {
+		t.Errorf("Failed to get volume name: %v", err)
+	}
+	if volName != testPVName {
+		t.Errorf("Expected volume name %q, got %q", testPVName, volName)
+	}
+}
+
+func TestInvalidLocalPath(t *testing.T) {
+	tmpDir, plug := getPlugin(t)
+	defer os.RemoveAll(tmpDir)
+
+	pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}}
+	mounter, err := plug.NewMounter(getTestVolume(false, "/no/backsteps/allowed/.."), pod, volume.VolumeOptions{})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = mounter.SetUp(nil)
+	expectedMsg := "invalid path: /no/backsteps/allowed/.. must not contain '..'"
+	if err.Error() != expectedMsg {
+		t.Fatalf("expected error `%s` but got `%s`", expectedMsg, err)
+	}
+}
+
+func TestMountUnmount(t *testing.T) {
+	tmpDir, plug := getPlugin(t)
+	defer os.RemoveAll(tmpDir)
+
+	pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}}
+	mounter, err := plug.NewMounter(getTestVolume(false, tmpDir), pod, volume.VolumeOptions{})
+	if err != nil {
+		t.Errorf("Failed to make a new Mounter: %v", err)
+	}
+	if mounter == nil {
+		t.Fatalf("Got a nil Mounter")
+	}
+
+	volPath := path.Join(tmpDir, testMountPath)
+	path := mounter.GetPath()
+	if path != volPath {
+		t.Errorf("Got unexpected path: %s", path)
+	}
+
+	if err := mounter.SetUp(nil); err != nil {
+		t.Errorf("Expected success, got: %v", err)
+	}
+	if _, err := os.Stat(path); err != nil {
+		if os.IsNotExist(err) {
+			t.Errorf("SetUp() failed, volume path not created: %s", path)
+		} else {
+			t.Errorf("SetUp() failed: %v", err)
+		}
+	}
+
+	unmounter, err := plug.NewUnmounter(testPVName, pod.UID)
+	if err != nil {
+		t.Errorf("Failed to make a new Unmounter: %v", err)
+	}
+	if unmounter == nil {
+		t.Fatalf("Got a nil Unmounter")
+	}
+
+	if err := unmounter.TearDown(); err != nil {
+		t.Errorf("Expected success, got: %v", err)
+	}
+	if _, err := os.Stat(path); err == nil {
+		t.Errorf("TearDown() failed, volume path still exists: %s", path)
+	} else if !os.IsNotExist(err) {
+		t.Errorf("TearDown() failed: %v", err)
+	}
+}
+
+func testFSGroupMount(plug volume.VolumePlugin, pod *v1.Pod, tmpDir string, fsGroup int64) error {
+	mounter, err := plug.NewMounter(getTestVolume(false, tmpDir), pod, volume.VolumeOptions{})
+	if err != nil {
+		return err
+	}
+	if mounter == nil {
+		return fmt.Errorf("Got a nil Mounter")
+	}
+
+	volPath := path.Join(tmpDir, testMountPath)
+	path := mounter.GetPath()
+	if path != volPath {
+		return fmt.Errorf("Got unexpected path: %s", path)
+	}
+
+	if err := mounter.SetUp(&fsGroup); err != nil {
+		return err
+	}
+	return nil
+}
+
+func TestFSGroupMount(t *testing.T) {
+	tmpDir, plug := getPlugin(t)
+	defer os.RemoveAll(tmpDir)
+	info, err := os.Stat(tmpDir)
+	if err != nil {
+		t.Errorf("Error getting stats for %s (%v)", tmpDir, err)
+	}
+	s := info.Sys().(*syscall.Stat_t)
+	if s == nil {
+		t.Errorf("Error getting stats for %s (%v)", tmpDir, err)
+	}
+	fsGroup1 := int64(s.Gid)
+	fsGroup2 := fsGroup1 + 1
+	pod1 := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}}
+	pod1.Spec.SecurityContext = &v1.PodSecurityContext{
+		FSGroup: &fsGroup1,
+	}
+	pod2 := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}}
+	pod2.Spec.SecurityContext = &v1.PodSecurityContext{
+		FSGroup: &fsGroup2,
+	}
+	err = testFSGroupMount(plug, pod1, tmpDir, fsGroup1)
+	if err != nil {
+		t.Errorf("Failed to make a new Mounter: %v", err)
+	}
+	err = testFSGroupMount(plug, pod2, tmpDir, fsGroup2)
+	if err != nil {
+		t.Errorf("Failed to make a new Mounter: %v", err)
+	}
+	//Checking if GID of tmpDir has not been changed by mounting it by second pod
+	s = info.Sys().(*syscall.Stat_t)
+	if s == nil {
+		t.Errorf("Error getting stats for %s (%v)", tmpDir, err)
+	}
+	if fsGroup1 != int64(s.Gid) {
+		t.Errorf("Old Gid %d for volume %s got overwritten by new Gid %d", fsGroup1, tmpDir, int64(s.Gid))
+	}
+}
+
+func TestConstructVolumeSpec(t *testing.T) {
+	tmpDir, plug := getPlugin(t)
+	defer os.RemoveAll(tmpDir)
+
+	volPath := path.Join(tmpDir, testMountPath)
+	spec, err := plug.ConstructVolumeSpec(testPVName, volPath)
+	if err != nil {
+		t.Errorf("ConstructVolumeSpec() failed: %v", err)
+	}
+	if spec == nil {
+		t.Fatalf("ConstructVolumeSpec() returned nil")
+	}
+
+	volName := spec.Name()
+	if volName != testPVName {
+		t.Errorf("Expected volume name %q, got %q", testPVName, volName)
+	}
+
+	if spec.Volume != nil {
+		t.Errorf("Volume object returned, expected nil")
+	}
+
+	pv := spec.PersistentVolume
+	if pv == nil {
+		t.Fatalf("PersistentVolume object nil")
+	}
+
+	ls := pv.Spec.PersistentVolumeSource.Local
+	if ls == nil {
+		t.Fatalf("LocalVolumeSource object nil")
+	}
+}
+
+func TestPersistentClaimReadOnlyFlag(t *testing.T) {
+	tmpDir, plug := getPlugin(t)
+	defer os.RemoveAll(tmpDir)
+
+	// Read only == true
+	pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}}
+	mounter, err := plug.NewMounter(getTestVolume(true, tmpDir), pod, volume.VolumeOptions{})
+	if err != nil {
+		t.Errorf("Failed to make a new Mounter: %v", err)
+	}
+	if mounter == nil {
+		t.Fatalf("Got a nil Mounter")
+	}
+	if !mounter.GetAttributes().ReadOnly {
+		t.Errorf("Expected true for mounter.IsReadOnly")
+	}
+
+	// Read only == false
+	mounter, err = plug.NewMounter(getTestVolume(false, tmpDir), pod, volume.VolumeOptions{})
+	if err != nil {
+		t.Errorf("Failed to make a new Mounter: %v", err)
+	}
+	if mounter == nil {
+		t.Fatalf("Got a nil Mounter")
+	}
+	if mounter.GetAttributes().ReadOnly {
+		t.Errorf("Expected false for mounter.IsReadOnly")
+	}
+}
+
+func TestUnsupportedPlugins(t *testing.T) {
+	tmpDir, err := utiltesting.MkTmpdir("localVolumeTest")
+	if err != nil {
+		t.Fatalf("can't make a temp dir: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	plugMgr := volume.VolumePluginMgr{}
+	plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
+	spec := getTestVolume(false, tmpDir)
+
+	recyclePlug, err := plugMgr.FindRecyclablePluginBySpec(spec)
+	if err == nil && recyclePlug != nil {
+		t.Errorf("Recyclable plugin found, expected none")
+	}
+
+	deletePlug, err := plugMgr.FindDeletablePluginByName(localVolumePluginName)
+	if err == nil && deletePlug != nil {
+		t.Errorf("Deletable plugin found, expected none")
+	}
+
+	attachPlug, err := plugMgr.FindAttachablePluginByName(localVolumePluginName)
+	if err == nil && attachPlug != nil {
+		t.Errorf("Attachable plugin found, expected none")
+	}
+
+	createPlug, err := plugMgr.FindCreatablePluginBySpec(spec)
+	if err == nil && createPlug != nil {
+		t.Errorf("Creatable plugin found, expected none")
+	}
+
+	provisionPlug, err := plugMgr.FindProvisionablePluginByName(localVolumePluginName)
+	if err == nil && provisionPlug != nil {
+		t.Errorf("Provisionable plugin found, expected none")
+	}
+}